Category:Fossils from the Austin Chalk

Media in category "Fossils from the Austin Chalk"

The following 3 files are in this category, out of 3 total.

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  Annual report of the United States Geological Survey to the Secretary of the Interior (1899) (14761137284).jpg 1,821 × 2,825; 1.17 MB
  
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  North American index fossils, invertebrates (1909) (14594401110).jpg 1,956 × 1,952; 690 KB
  
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  North American index fossils, invertebrates (1909) (14780784522).jpg 1,972 × 1,292; 471 KB